Confined to an asylum for the criminally insane, Nica Pierce (Fiona Dourif) is wrongly convinced that she, not Chucky, murdered her entire family. But when her psychiatrist introduces a new therapeutic "tool" to facilitate his patients' group sessions - an all-too-familiar "Good Guy" doll - a string of grisly deaths plagues the asylum, and Nica starts to wonder if maybe...she isn't crazy after all.